LDY type metallurgical single beam Overhead crane used in foundry industry

LDY type metallurgical single beam Overhead crane used in foundry industry
1、 Overview
This manual is applicable to the installation, use and maintenance of LDY type metallurgical electric single beam crane for installation, operation and maintenance personnel.
1. Main purpose
LDY type metallurgical electric single beam crane (hereinafter referred to as crane) is in accordance with jb/t1306-2008 standard and conforms to quality inspection office document [375]
The space transportation tool designed for use with yhii electric hoist is mainly used to work in an intermittent and periodic manner through a crane
Hook or other pick-up device can timely and quickly complete the displacement of lifting and transporting heavy objects required in the process of metallurgical production, which is the key technology in modern industrial enterprises
Casting sites are important tools and equipment to improve labor productivity.
2. Scope of application
LDY crane is applicable to working level A6, working environment temperature ≤ 60 ℃, relative humidity ≤ 85%, altitude below 2000m, no
Work in corrosive medium environment.
3. Environmental conditions
(1) The power supply of the crane is three-phase AC, with a rated frequency of 50Hz and a rated voltage of 380V (if the power supply voltage and frequency are different from this regulation
At the same time, the power supply voltage and frequency of the place of use should be indicated when ordering). The upper limit of allowable voltage fluctuation on motor and electrical control equipment is rated power
The lower limit (at peak current) is -15% of the rated voltage. The internal voltage loss of the crane is 5%.
(2) Crane working environment: temperature ≤ 60 ℃, humidity ≤ 85%, altitude below 2000m, no fire, explosion hazards, corrosive media.
4. Noise
When the crane is in the non enclosed plant, without other noise interference and the lifting height is not less than 5m, measure it on the ground, and the lifting capacity is Q
When ≤ 5T, the noise of the whole machine shall not be greater than 85 dB (a), and when the lifting weight Q ≥ 5T, the noise of the whole machine shall not be greater than 90 dB (a)
2、 Structure and performance parameters of crane
The structure of the crane is mainly composed of three parts: bridge, metallurgical electric hoist and electrical system (see Figure 2 and random diagram).
The bridge is used to support and move the load longitudinally, and it is composed of metal structure and operating mechanism. The metal structure includes the main beam, end beam and the connection between the main beam and end beam
Connect to three parts. The running mechanism is composed of four parts: driving device, transmission device, braking device and wheel group. Metallurgical electric hoist undertakes lifting and horizontal
Move the load upward. The electrical system is composed of main circuit and control circuit.
1. Bridge
The main beam is welded into a solid web beam by cold-formed U-shaped channel steel and I-steel or a box beam by steel plate. The end beam is U-shaped channel steel assembled and welded into a box
The bolt and shear flange connection structure or seat structure is adopted between the main and end beams, which is convenient for installation, transportation and storage.
2. Operating mechanism
The operating mechanism adopts the form of separate driving (see Figure 1), and the driving and braking are completed by the conical rotor motor. Its advantage is that it can reduce the wheel
The gnawing wear caused by skew and deviation is not easy to cause the wheel to climb the rail and fall off the track.
Running speed: the ground operation is generally 20, 30 m / min. Generally, it is manufactured at single speed. If users need other speed regulation methods, they should
Consult with the design department about whether it can be used before signing the contract, and it should be noted in the order contract.
Jingjiang Longma Hoisting Equipment Co., Ltd. sales Tel.: 138526225287
3. Lifting mechanism
The crane is equipped with two independent brake devices —– brake and safety brake (i.e. double brake) and metallurgical electric gourd with overload limiter
The reed forms a lifting mechanism, which can lift and lift heavy objects and move horizontally along the main beam.
4. Electrical system
The lifting motor of the metallurgical electric hoist adopts the conical rotor motor with large starting torque to adapt to the frequent intermittent work of the crane
Direct start of. In order to adapt to the environment with temperature above 40 ℃, motors with insulation class H and high temperature resistant cables are used.
The crane is operated by pressing the button switch (flashlight door) to make the contact of the contactor connect or cut off the power supply of the motor. Its main circuit and control
The control circuit has few electrical components, simple circuit and convenient use and maintenance.
Thermal insulation protection measures shall be taken outside electrical equipment such as motors.
5. Operation form
(1) Ground operation: the operator controls the flashlight button on the ground to control the crane for lifting operation. Crane running speed ≤ 30m/ min.
(2) Remote control: operators hold a remote control to control the crane for lifting operation.
Note: This product is recommended to use remote control operation as far as possible to protect personnel safety.
Name unit specification
Rated lifting capacity load:gn1t, 2T, 3T, 5T, 10t (maximum 10t, more than 10t, please choose Qdy metallurgical crane)
Span: s7.5m-30m
Lifting height: h6m-30m
Working class: jca3
Power supply 380V 50Hz
Big wheel diameter MM300
Working power source 3P A.C 50Hz 380V
Recommended track kg18-38
Note: gn= rated lifting tonnage s= span (distance from the center of the left track to the center of the right track) h= lifting height (distance from the ground to the highest point of the hook)